Question

contrast: how were the designs of pasteurs and redis experiments different? pasteur experimented with rotting meat; redi experimented with broth. redi experimented with rotting meat; pasteur experimented with broth. pasteur was able to show spontaneous generation was false, but redi was not. redi was able to show spontaneous generation was false, but pasteur was not. done

Explanation:

• Francesco Redi conducted experiments with rotting meat. He placed meat in jars, some open (where flies could lay eggs and maggots formed) and some covered (no maggots as flies couldn't access). This was to test the idea of spontaneous generation (the belief that living things could arise from non - living matter).
• Louis Pasteur used broth in his experiments. He designed swan - necked flasks. The broth was boiled (to kill existing microbes). The swan - neck allowed air (but not dust and microbes) to enter. When the neck was intact, no microbial growth in the broth. When the neck was broken (allowing dust/microbes in), microbial growth occurred. Both aimed to disprove spontaneous generation. But Redi's experiment was with meat and Pasteur's with broth.

Answer:

B. Redi experimented with rotting meat; Pasteur experimented with broth.